OPEN PAYMENT API

MerchantTopup

• Execution of "merchant_topup" results in the return of the "SUSPECTED_DUPLICATE_ORDER" error. What could be causing this?

PendingPayments

• What will happen to my request if it is deauthorized during a Request Money?
• After being notified by Pending Payments,how do users pay?
• How to use pending_payments properly?
• Does the setting range of expireDate which is a parameter of Create a Pending Payment include exactly 48 hours?

Cashback

• What is the notification timing for cashback event Webhhok?
• How do I test cashback errors cases?
• What should I set as the codeid for Delete a Code (or Delete a QRCode)?
• How can I use Cashback?
• Are there zero suppression of cashback_id in cashback's recon file?
• If I cannot cancel the cashback due to insufficient balance, can I cancel it again later?

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Refund/Cancel

• Can I cancel a payment after partial refund?
• If a refund is given to the user across months, when will it be reflected in the transfer?
• What happens if a user's balance exceeds the PayPay money saving limit by refund?
• How to refund?
• How does status of refund a payment API change?
• Is the payment cancellation by means of Cancel a payment notified to users?

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Directdebit

• How can I specify Pay Later as payment method?
• Tell me the flow of Native Payment including abnormal case.
• What is the requestType productType? What to specify?
• When I execute the payment request, the error when SUSPECTED_DUPLICATE_PAYMENT is returned.

Reconfile

• Does recon file include all the error cases?
• Are there zero suppression for pre-auth recon file order_id?
• Is Webhook notification performed when there is no applicable data for recon file?
• In what unit is recon file generated?
• Is it necessary to use a recon file?
• How can It get the recon file?

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Webhook

• Tell me how to send a Webhook for "FAILED".
• Is there any way to check the type of error if a webhook notification shows "FAILED"?
• Can the status be subject to change after the immediate payment/ PreAuth & Capture is COMPLETED?
• Is it possible to set up multiple Webhook destinations?
• Please provide the IP address of Webhook notification source server.
• How long will it take to send a webhook notification upon cashback failure?

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ContinuousPayments

• Is it possible to use Continuous Payment to make payments by setting intervals instead of making monthly requests?
• Could you please tell me the procedure when I want to operate both "continuous payment (automatic withdrawal)" and "automatic charge"?
• Is it allowed to change the amount of continuous payment in the middle of a contract?
• How do you set the merchantPaymentId for requestOrder when the request for continuous payments fails due to insufficient user balance?
• What if continuous payments request fails due to insufficient user balance?

COMMON

• Can I change my API key and secret?
• I got an error USER_STATE_IS_NOT_ACTIVE when I performed an Increase Capture.What is the cause of this error?
• Where can I find MERCHANT_ID, API_KEY, and API_SECRET in "PayPay for Developers" to use in building the SDK?
• Is it possible to set query parameters in the redirect URL?
• Can I add multiple users to PayPay for Developers?
• What value should I set for the value of currency parameter?

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WebCashier

• I am trying to call the PayPay payment screen in Webview, but it does not work properly.
• Is there any way to undisplay the login form on the payment screen?
• After the user pays, the payment fails because it is not redirected to the merchant.Is redirection guaranteed?
• Tell me about the return contents of Get payment details and resultInfo.code.
• Is it possible to execute Get Payment Details for expired payment screen?
• Please tell me how to set redirectType.

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PreAuthCapture

• Is there a function to receive as a temporary deposit like a security deposit and settle it when the transaction is completed?
• Can the amount be changed before it is fixed for PreAuth & Capture?
• If the users confirmation is required at the time of Capture (payment confirmation), how many hours do I have to obtain the users confirmation?
• The orderDescription of Capture a payment authorization is mandatory, unlike Create a Code. How will this be displayed to the user when set here? How would it be used if it is not visible to the user?
• When making a sale with an amount exceeding the increase amount, the user will be notified of consent. Is this notification going to the users PayPay application?
• If the amount at the time of capture is different from the amount at the time of Pre-auth What happens to the users action?

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AcquireUserAuthorization

• Unable to decode JWT of responseToken after account linking
• What is the recommended flow when the user authorization screen expires?
• Please tell me why the "SESSION_NOT_FOUND" error is returned when fetching the status of Account Link QR Code?
• Is it possible to sign up for a new account upon user authorization?
• Is it possible to set a different redirect destination when user authorization acquisition succeeds and when it fails?
• How can merchants check when a user authorization expires?

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